.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(900px 500px at 15% 0%, #1e3a5f 0%, transparent 55%),
    radial-gradient(700px 400px at 100% 20%, #0f3d3a 0%, transparent 50%),
    #0f1419;
}
.login-card {
  width: 100%;
  max-width: 380px;
  background: linear-gradient(180deg, rgba(255,255,255,.04), transparent), #152033;
  border: 1px solid #334155;
  border-radius: 16px;
  padding: 28px 24px 22px;
  box-shadow: 0 18px 50px rgba(0,0,0,.35);
}
.login-brand {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.login-sub {
  color: #94a3b8;
  margin: 6px 0 18px;
  font-size: 0.92rem;
}
.login-card label {
  display: block;
  font-size: 0.85rem;
  color: #94a3b8;
  margin: 10px 0 4px;
}
.login-card input {
  width: 100%;
  background: #1a2332;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 11px 12px;
  color: #e8eef7;
  font: inherit;
}
.login-card input:focus {
  outline: none;
  border-color: #38bdf8;
}
.login-btn {
  width: 100%;
  margin-top: 16px;
  border: none;
  border-radius: 10px;
  padding: 12px;
  background: linear-gradient(135deg, #0ea5e9, #0284c7);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.login-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.login-err {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(248,113,113,.1);
  border: 1px solid rgba(248,113,113,.35);
  color: #fecaca;
  font-size: 0.88rem;
}
.login-warn {
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(251,191,36,.1);
  border: 1px solid rgba(251,191,36,.35);
  color: #fde68a;
  font-size: 0.86rem;
  line-height: 1.45;
}
.login-tip {
  margin-top: 14px;
  color: #64748b;
  font-size: 0.78rem;
  line-height: 1.4;
}
.login-card code {
  font-size: 0.8em;
  color: #7dd3fc;
}